Hola. I installed an HKS SSQV Blow off Valve, stock air filter and everything else. It sounded really cool, but it couldn't idle, so i had to have my foot on the throttle constantly when not moving, a big pain in the ***. What would cause this? I had the hole in the stock airbox blocked off and everything else was installed right. Dont know what's wrong?

 

sounds like a small vaccum leak. if that's the only thing you've changed i would check to make sure the BOV is closing all the way and not stuck open a tiny bit.

 

im willing to bet u didnt recirculate it. thats ur problem. recirculate it and this problem will go away

 

plug it hole where your stock BOV went into the air intake tube with a lug nut and a hose clamp holding it in place. My car did the same thing.

 

What do you mean recirculate it?

 

the original (stock) BOV did not vent to atmosphere. Instead it vented that air back into the stock air box to be used again.

The SSQV vents to atmosphere (goes PSHT), resulting in a hole in the air box (and possible lines) where the stock recirculating bov was and fed into.

Poor explanation but that's what's probably happening.

 

That would be a likely cause if the car was stalling after lifting off the throttle in boost. My HKS SSQV works 100% fine vented to the atmosphere.


As for just idleing, you probably forgot to cap off a hole somewhere.

 

I did cap off the vent from the airbox. And i fed that little tube from the stock bov back into the HKS one.

 

Check for other vacuum leaks then.

 

sorry this may be kinda off topic but, i always wanted to hear how the hks ssqv bov sounds like. would you mind if you upload a video of how it sounds? im trying to decide on a bov but i dont know how they sound. thanks

 

vacuum leak .. check the hose going to the wastegate

 

Definatly a vacuum leak, and i'd watch keeping the car running by holding the revs up. I'm not sure but wouldn't you be doing possible damage because the car would be running on more pressure? ANYWAY SSQV's should all sound the same, that really high pitch whistle sound, from knowledge all BoVs make the same sound, it just depends on the car. If you wanna be amatuer and have a BoV it will make that annoying ptshhh sound, SSQV will make the http://www.935motorsports.com/media05/hksSSBOV.mp3 or blocking it off will have that awesome rattlesnake sound.

 

your problem is that your bov is not adjusted correctly. It should only open up when the vacume is stronger than at idle. That is why when you rev it up it runs, there is less vacume thus closing the valve. There is a spring adjustment on the back. To test if it is infact the problem just cover it with your hand and see if it idles. This is what I had to do to mine.

 

The car would run at more pressure? That doesn't make any sense. The car will be fine if he just holds the revs up. All BOVs do not make the same sound, and they should not make the same sound. It depends on the BOV and the car, not just the car. Also, amateurs don't have BOVs, people concerned about turbo longevity (and people who like sweet noises) do. You had it reversed, but I'm glad you find the sound of compressor surge attractive.


The new style HKS SSQVs are no longer adjustable. They claim that that have "fixed" the leaking at idle problem. Which of course, is total crap.

I love the SSQV, but why did they have to make it non-adjustable?!

 

you are wrong. even if the blow off valve is set ot loose it would be fine. now if the bov was broken then yea id say that its possibly not plunging/sealing right ... but it doesnt matter how tight or loose the setting is vacuum leak wise.

 

oh just to let you know hks bov's suck! these guys kick ***
http://www.synapseengineering.com/
http://youtube.com/profile?user=synaptic1
there stuff is really quality

 

This is half-correct.

How tight you have it adjusted does make a difference. Changing how hard/easy it is for the valve to open. If you have it too loose then the idle fluctuations will make it open and close, and leak.


They don't "suck" any more than any other one. In comparison to other major BOV types they are actually very good, being a pull type instead of a push type.

 

Solution: Run bov-less.